Permanent Magnet and Electromechanical Devices (eBook)

Materials, Analysis, and Applications

Edward P. Furlani (Autor)

eBook Download: PDF

2001 | 1. Auflage
518 Seiten
Elsevier Science (Verlag)
978-0-08-051369-0 (ISBN)

Infos

The book provides both the theoretical and the applied background needed to predict magnetic fields. The theoretical presentation is reinforced with over 60 solved examples of practical engineering applications such as the design of magnetic components like solenoids, which are electromagnetic coils that are moved by electric currents and activate other devices such as circuit breakers. Other design applications would be for permanent magnet structures such as bearings and couplings, which are hardware mechanisms used to fashion a temporary connection between two wires.

This book is written for use as a text or reference by researchers, engineers, professors, and students engaged in the research, development, study, and manufacture of permanent magnets and electromechanical devices. It can serve as a primary or supplemental text for upper level courses in electrical engineering on electromagnetic theory, electronic and magnetic materials, and electromagnetic engineering.

Inhalt

Cover 1
Copyright Page 5
Contents 8
Foreword 12
Preface 14
Chapter 1. Materials 20
1.1 Introduction 20
1.2 Units 21
1.3 Classification of Materials 25
1.4 Atomic Magnetic Moments 26
1.5 Paramagnetism 36
1.6 Ferromagnetism 38
1.7 Magnetostatic Energy 42
1.8 Demagnetization Field 42
1.9 Anisotropy 46
1.10 Domains 52
1.11 Hysteresis 55
1.12 Soft Magnetic Materials 58
1.13 Hard Magnetic Materials 63
1.14 Ferrites 65
1.15 Alnico 67
1.16 Samarium-Cobalt 69
1.17 Neodymium-Iron-Boron 70
1.18 Bonded Magnets 72
1.19 Magnetization 74
1.20 Stability 85
Chapter 2. Review of Maxwell’s Equations 92
2.1 Introduction 92
2.2 Maxwell’s Equations 93
2.3 Potentials 101
2.4 Quasi-static Theory 104
2.5 Static Theory 106
2.6 Summary 110
Chapter 3. Field Analysis 116
3.1 Introduction 116
3.2 Magnetostatic Analysis 116
3.3 The Current Model 145
3.4 The Charge Model 150
3.5 Magnetic Circuit Analysis 163
3.6 Boundary-Value Problems 180
3.7 Method of Images 204
3.8 Finite Element Analysis 209
3.9 Finite Difference Method 219
Chapter 4. Permanent Magnet Applications 226
4.1 Introduction 226
4.2 Magnet Structures 227
4.3 High Field Structures 284
4.4 Magnetic Latching 287
4.5 Magnetic Suspension 292
4.6 Magnetic Gears 301
4.7 Magnetic Couplings 305
4.8 Magnetic Resonance Imaging 325
4.9 Electrophotography 331
4.10 Magneto-Optical Recording 337
4.11 Free-Electron Lasers 344
Chapter 5. Electromechanical Devices 354
5.1 Introduction 354
5.2 Device Basics 354
5.3 Quasi-static Field Theory 356
5.4 Electrical Equations 373
5.5 Mechanical Equations 380
5.6 Electromechanical Equations 382
5.7 Energy Analysis 395
5.8 Magnetic Circuit Actuators 402
5.9 Axial-Field Actuators 412
5.10 Resonant Actuators 421
5.11 Magneto-Optical Bias Field Actuator 425
5.12 Linear Actuators 432
5.13 Axial-Field Motors 440
5.14 Stepper Motors 456
5.15 Hybrid Analytical-FEM Analysis 465
5.16 Magnetic MEMS 474
Appendix A. Vector Analysis 488
A.1 Cartesian Coordinates 488
A.2 Cylindrical Coordinates 492
A.3 Spherical Coordinates 495
A.4 Integrals of Vector Functions 498
A.5 Theorems and Identities 504
A.6 Coordinate Transformations 510
Appendix B. Green’s Functions 514
Appendix C. Systems of Equations 516
C.1 Euler’s Method 517
C.2 Improved Euler Method 521
C.3 Runge-Kutta Methods 522
Appendix D. Units 528
Index 532

Produkt-Details

• Erscheint lt. Verlag: 5.9.2001
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Elektrodynamik
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Festkörperphysik
• Themenwelt: Technik ► Elektrotechnik / Energietechnik
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 0-08-051369-7 / 0080513697
• ISBN-13: 978-0-08-051369-0 / 9780080513690